26 October: Cassini sweeps past Titan, just 1,200 kilometres
above the moon's surface, at 16:44 GMT. During its only
previous visit, on 3 July 2004, the craft passed about 339,000
kilometres away from the moon, seeing little more than warm
and cool patches on the surface.
On this pass, Cassini grazed Titan's outer atmosphere at
roughly six kilometres per second, allowing it to sample
the moon's dense fog. The thickness of the atmosphere will
affect how the Huygens probe, due to arrive on Titan next
January, will cope with its rollercoaster ride to the surface.
The data collected may also reveal what the probe will hit
when it arrives -- liquid oceans, hydrocarbon gunge, or
solid rock.
The close shave with Titan also altered Cassini's trajectory
so it now orbits Saturn every 48 days, rather than every
4 months. This will bring it into position to release the
Huygens probe on 25 December 2004.